<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    div {
      width: 100px;
      height: 100px;
      background-color: red;
      /* 修改元素的显示模式 */
      /* display: block; */
      /* display: inline; */
      display: inline-block;
    }
  </style>
</head>

<body>
  <div>11</div>
  <div>22</div>
  <div>33</div>
</body>

</html>